When I attached the servo as said in this tutorial:http://playground.arduino.cc/Learning/SingleServoExample,I encountered a problem. As soon as I connect the servo, either it keeps on rotating continuously or the Arduino gets disconnected from the computer.

I applied.Connected the ground from the servo's GND to Arduino's GND & the GNd of my 9v cell.The 9V cell's VCC goes to the servo's +ve terminal.Still I have the illogical, serial data independent complete rotation problem. Though the Arduino doesn't get disconnected now.

sanath

Hey , i am facing a similar problem , i have given a 5volts (stepped down from 12 volts ) to the board , the 9g servo runs properly but i have a 60g avionic servo , if i connect it in the same way and try ,the servo starts once and then stops , also can someone explain the improper rotation with these servos , i am really out of ideas and a bit frustrated .( i used the library , sweep sketch )